const unsigned char audioData[] = {
  0x52, 0x49, 0x46, 0x46, 0x3E, 0x12, 0x00, 0x00, 0x57, 0x41, 0x56, 0x45,
  0x66, 0x6D, 0x74, 0x20, // truncated for brevity
};

const int aPin = 9;
// Pin assignments for flex sensors (or potentiometers)
int flexSensor1 = A0;  // Index finger
int flexSensor2 = A1;  // Middle finger
int flexSensor3 = A2;  // Ring finger
int flexSensor4 = A3;  // Little finger
int flexSensor5 = A4;  // Thumb

// Thresholds for detecting bend, adjust based on sensor readings
int bendThreshold = 500;  // Adjust as needed

void setup() {
  // Initialize Serial Monitor for printing the values and letters
  Serial.begin(9600);
}

void loop() {
  // Read sensor values
  int sensorValue1 = analogRead(flexSensor1);  // Index finger
  int sensorValue2 = analogRead(flexSensor2);  // Middle finger
  int sensorValue3 = analogRead(flexSensor3);  // Ring finger
  int sensorValue4 = analogRead(flexSensor4);  // Little finger
  int sensorValue5 = analogRead(flexSensor5);  // Thumb

  // Check flex sensor values and map them to letters
  String letter = translateToLetter(sensorValue1, sensorValue2, sensorValue3, sensorValue4, sensorValue5);

  // Print sensor values and translated letter on Serial Monitor
  Serial.print("Flex Sensor Values: ");
  Serial.print(sensorValue1); Serial.print(", ");
  Serial.print(sensorValue2); Serial.print(", ");
  Serial.print(sensorValue3); Serial.print(", ");
  Serial.print(sensorValue4); Serial.print(", ");
  Serial.println(sensorValue5);

  Serial.print("Translated Letter: ");
  Serial.println(letter);

  for (int i = 0; i < sizeof(audioData); i++) {
    analogWrite(aPin, audioData[i]);  // Output the audio data via PWM
    delayMicroseconds(125);               // Adjust timing for 8kHz sample rate
  }

  delay(500);  // Small delay for readability
}

// Function to detect the bending of each finger (including the thumb) and return a letter
String translateToLetter(int val1, int val2, int val3, int val4, int val5) {

  // Define thresholds for finger bends (adjust these based on sensor values)
  int bendThreshold = 500;  // Example threshold, adjust as needed

  // Flags to track which fingers are bent
  bool isThumbBent = val5 > bendThreshold;   // Thumb
  bool isIndexBent = val1 > bendThreshold;   // Index finger
  bool isMiddleBent = val2 > bendThreshold;  // Middle finger
  bool isRingBent = val3 > bendThreshold;    // Ring finger
  bool isLittleBent = val4 > bendThreshold;  // Little finger

  // Logic to determine the letter based on finger positions
  if (isThumbBent && isIndexBent && !isMiddleBent && !isRingBent && !isLittleBent) {
    return "A";  // Thumb and index finger are bent, rest are straight
  }
  else if (isIndexBent && isMiddleBent && !isRingBent && !isLittleBent && !isThumbBent) {
    return "B";  // Index and middle fingers are bent, thumb and others are straight
  }
  else if (!isThumbBent && isMiddleBent && isRingBent && !isLittleBent && !isIndexBent) {
    return "C";  // Middle and ring fingers are bent, others are straight
  }
  else if (isThumbBent && isIndexBent && isMiddleBent && isRingBent && isLittleBent) {
    return "D";  // All fingers are bent
  }
  else if (!isThumbBent && !isIndexBent && !isMiddleBent && !isRingBent && !isLittleBent) {
    return "E";  // Open hand, no fingers bent
  }
  else {
    return "Unknown";  // Undefined combination of finger bends
  }
}

// CAUTION:
// UNTESTED CODE.

/*
  const unsigned char audioData[] = {
  // Byte data from your .h file
  };

  // Pin for outputting the audio
  const int audioPin = 9;

  void setup() {
  pinMode(audioPin, OUTPUT);
  }

  void loop() {
  for (int i = 0; i < sizeof(audioData); i++) {
    analogWrite(audioPin, audioData[i]);  // Output the audio data via PWM
    delayMicroseconds(125);               // Adjust timing for 8kHz sample rate
  }
  }

*/